Зашто расте стопа кварова на славинама?

It is reported that Shanghai has conducted random inspections on the quality of faucets, and the unqualified rate has reached 40%. What causes such a low pass rate of faucets?

This is firstly caused by technological reasons. Тренутно, many daily necessities are made of copper, гвожђе, stainless steel and other materials. Ови материјали садрже елементе тешких метала. If they are not handled properly, they may exceed the standard.

На пример, the main elements of stainless steel include manganese, хром, и никла. In order to maintain corrosion resistance, нерђајући челик мора да садржи одређену количину хрома. If the chromium is handled improperly, it may cause excessive chromium. In the same way, improper handling of manganese may lead to excessive manganese.

The copper alloy used to make faucets contains traces of metal elements such as iron, алуминијум, и олово. Ако нема олова, тешко се формира током ливења. Што је већи садржај олова, the easier the casting process. Стога, copper faucets on the market generally contain a certain amount of lead. If the factory does not do a good job of removing lead during manufacturing, it will cause excessive lead.

Други разлог је тај што технологија и опрема компаније стари, causing trace elements to be uncontrollable. Обично, када се нова опрема први пут пушта у производњу, његови производи су квалификовани, али када се опрема користи дуже време, the products will exceed the trace elements. This situation cannot be repaired from a technical point of view and can only be replaced with new equipment, but some factories continue to use it to save money. This is a technical problem and also a cost problem.

A seller of bathroom equipment told reporters that most faucets on the market now have copper cores, but the quality varies. Faucets from small manufacturers and cheaper prices are likely to exceed the lead. То је зато што неки произвођачи не купују стандардне легуре месинга како би контролисали трошкове, but purchase cheap lead brass as raw materials from small workshops. This kind of lead brass tends to have a high lead content, but the price is only half of the brass alloy.

Како разликовати инфериорне славине од цене? An industry insider told reporters that a copper faucet with formal craftsmanship should cost more than one hundred yuan, while a faucet worth tens of yuan is likely to use lead brass.

“У поређењу са великим производима, faucets worth tens of yuan are really not worth spending so much time and energy to choose one by one, и неће обраћати пажњу на проблем прекомерног садржаја олова.” A Shanghai citizen who is decorating his home told reporters.

У том погледу, some people in the industry said that domestic consumers did not pay enough attention to the quality and safety of faucets, which also gave many unqualified and low-quality faucets an opportunity.